GB1133203A - Improved apparatus for spectral analyses - Google Patents

Improved apparatus for spectral analyses

Info

Publication number
GB1133203A
GB1133203A GB47865/65A GB4786565A GB1133203A GB 1133203 A GB1133203 A GB 1133203A GB 47865/65 A GB47865/65 A GB 47865/65A GB 4786565 A GB4786565 A GB 4786565A GB 1133203 A GB1133203 A GB 1133203A
Authority
GB
United Kingdom
Prior art keywords
beams
sample
photo
shutter
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB47865/65A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optical Coating Laboratory Inc
Original Assignee
Optical Coating Laboratory Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Optical Coating Laboratory Inc filed Critical Optical Coating Laboratory Inc
Publication of GB1133203A publication Critical patent/GB1133203A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/12—Generating the spectrum; Monochromators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,133,203. Photo-electric spectral absorption analysis. OPTICAL COATING LABORATORY Inc. Nov.11, 1965 [Nov. 24, 1964], No.47865/65 Heading G1A. In a photo-electric spectral absorption investigation a sample beam and a reference beam are passed through a circular filter which is rotated to selected successive wavelength bands from the two beams. A photo-electric device receives the two beams alternately and drives a shutter in the reference beam to balance the two beams. The degree of shutter movement indicates the amount of absorption of a sample in the sample beam and provides a Y-signal to a moving chart recorder, the X-movement of the chart being correlated with the movement of the circular filter selecting the wavelengths. In the figure radiation from a source 11, such as a hermit lamp, black-body or tungsten filament lamp is split into two beams S and R by the twin apertured plate 14 and passed alternately by rotating chopper disc 16 through windows 26 and 27, the reference beam window 27 having a variable shutter 31. A sample cell is placed in the sample beam S either as shown at 61 or as shown dotted at 62. The two beams after passing through the rotating circular filter 38 impinge upon a photo-resistor 48 whose output feeds one winding of a two phase motor driving the shutter 31. The other phase winding is fed from the power supply driving the chopper disc 16. The shutter 31 is thereby driven so as to balance the intensity of the sample and reference beams upon the photo-resistor and the movement is communicated to the pen of the chart recorder 56 as the amount of absorption by the sample. The chart speed is correlated with the speed of rotation of the circular filter, which is of the kind disclosed in Specification 1,117, 772.
GB47865/65A 1964-11-24 1965-11-11 Improved apparatus for spectral analyses Expired GB1133203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41343264A 1964-11-24 1964-11-24

Publications (1)

Publication Number Publication Date
GB1133203A true GB1133203A (en) 1968-11-13

Family

ID=23637206

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47865/65A Expired GB1133203A (en) 1964-11-24 1965-11-11 Improved apparatus for spectral analyses

Country Status (3)

Country Link
US (1) US3437411A (en)
DE (1) DE1472198C3 (en)
GB (1) GB1133203A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634694A (en) * 1969-03-18 1972-01-11 Us Navy Programmed-response spectral scanning telephotometer system
JPS5014141B1 (en) * 1969-05-28 1975-05-26
DE2141364C3 (en) * 1971-08-18 1981-02-19 Sulzer Morat Gmbh, 7024 Filderstadt Method and device for recognizing the color of an original
BE788197A (en) * 1971-08-31 1973-02-28 Eastman Kodak Co METHOD AND APPARATUS FOR DETERMINING THE TRANSMISSION SPECTRUM OF A PRACTICALLY TRANSPARENT MEDIUM
US3740147A (en) * 1972-01-10 1973-06-19 Farrand Optical Co Inc Microspectrophotometer with two fields of view
US3794425A (en) * 1972-08-22 1974-02-26 Shell Oil Co Scanning infrared spectroscopic analyzer using rotating variable filter
JPS545987B2 (en) * 1972-12-28 1979-03-23
US3810696A (en) * 1973-02-20 1974-05-14 Waters Associates Inc Improved analytical apparatus for measuring light absorbance of fluids
US3897154A (en) * 1973-11-15 1975-07-29 Roland C Hawes Sample-background autocancellation in fluid-sample analyzers
US4125314A (en) * 1977-05-05 1978-11-14 Dr. Ralph M. Grant Engineering Consultants, Inc. Beam ratio control for holography
CA1084726A (en) * 1978-01-13 1980-09-02 Earl J. Fjarlie Scanning spectrometer
US4657398A (en) * 1985-06-10 1987-04-14 Miles Laboratories, Inc. Simultaneous multiple wavelength photometer
US4971437A (en) * 1986-07-28 1990-11-20 Texaco Inc. Optical spectral analysis system and method
US5699156A (en) * 1994-11-23 1997-12-16 Carver; David R. Spectrophotometer apparatus with dual light sources and optical paths, fiber optic pick-up and sample cell therefor
US5969812A (en) * 1995-10-18 1999-10-19 Carver; David R. Spectrophotometer apparatus with dual concentric beams and fiber optic beam splitter
US20050162653A1 (en) * 2004-01-27 2005-07-28 Carver David R. Apparatus for measuring spectral absorbance using a unique optical modulator to produce spectral absorbance data and process for making same
DE102021116581A1 (en) * 2020-10-16 2022-04-21 Zoller & Fröhlich GmbH laser scanner

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269674A (en) * 1939-08-22 1942-01-13 American Cyanamid Co Method for photometric analysis
US2439373A (en) * 1944-09-27 1948-04-06 American Cyanamid Co Flickering beam photometer
US2605671A (en) * 1948-02-28 1952-08-05 Gen Electric Spectrophotometer
US2631489A (en) * 1949-01-12 1953-03-17 Marcel J E Golay Monochromator
US3039353A (en) * 1954-06-14 1962-06-19 Perkin Elmer Corp Radiation comparison systems
US3016800A (en) * 1958-07-03 1962-01-16 Texaco Inc Wedge for a double beam spectro-photometer
US3071037A (en) * 1958-09-22 1963-01-01 Bausch & Lomb Ratio measuring spectrophotometer
US3062088A (en) * 1959-04-09 1962-11-06 Bodenseewerk Perkin Elmer Co Null-type radiation analysis system
FR1314569A (en) * 1961-12-01 1963-01-11 Optical filters with thin films of non-uniform thickness produced by vacuum evaporation, method and devices for obtaining them, and their applications

Also Published As

Publication number Publication date
DE1472198C3 (en) 1975-06-26
DE1472198B2 (en) 1974-09-05
DE1472198A1 (en) 1969-01-23
US3437411A (en) 1969-04-08

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